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                [POI2015]Kinoman                </h1>
                <p>时间限制：60s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  空间限制：128MB</p>			</div>
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                                <h3>题目描述</h3><p><div>共有m部电影，编号为1~m，第i部电影的好看值为w[i]。</div>
<div>在n天之中（从1~n编号）每天会放映一部电影，第i天放映的是第f[i]部。</div>
<div>你可以选择l,r(1&lt;=l&lt;=r&lt;=n)，并观看第l,l+1,&hellip;,r天内所有的电影。如果同一部电影你观看多于一次，你会感到无聊，于是无法获得这部电影的好看值。所以你希望最大化观看且仅观看过一次的电影的好看值的总和。</div>
<p></p></p><hr/><h3>输入格式</h3><p><div>第一行两个整数n,m(1&lt;=m&lt;=n&lt;=1000000)。</div>
<div>第二行包含n个整数f[1],f[2],&hellip;,f[n](1&lt;=f[i]&lt;=m)。</div>
<div>第三行包含m个整数w[1],w[2],&hellip;,w[m](1&lt;=w[j]&lt;=1000000)。</div>
<p></p></p><hr/><h3>输出格式</h3><p><div>输出观看且仅观看过一次的电影的好看值的总和的最大值。</div>
<p></p></p><hr/><h3>样例输入</h3><pre>9 4
2 3 1 1 4 1 2 4 1
5 3 6 6</pre><hr/><h3>样例输出</h3><pre>15
样例解释：
观看第2,3,4,5,6,7天内放映的电影，其中看且仅看过一次的电影的编号为2,3,4。

</pre><hr/><h3>提示</h3><p>没有写明提示</p><hr/><h3>题目来源</h3><p>鸣谢Jcvb</p>
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